Windscreen Wipers Going On When Car Is Turned Off?

Hi all new to this forum and was looking some help with my car. I am not a car person so I have came here to see if anyone can help me. The problem that I have is that my windscreen wipers are going on after the car has been turned of and then leaving me with a dead battery. I took the car to my mechanic and he looked at the main fuse board and pulled it down and he heard a buzz and from then the wipers have not went on. Any help would be great.

First of all welcome to the Forum.
The trouble sounds like maybe a loose relay or a connector was not in fully, sometimes a wayward foot movement can knock something and cause problems.
So is the situation now that the problem has stopped or that the wipers won't work at all?

You're welcome, yep definitely sounds like a loose connection was the problem and has corrected itself with the movement of the fusebox.
At least you know where to look if it ever rears it's head again.

mine did that when there was water in the electrics. there was the indicators and interior lights too though - you could just have a more minor version
mine also fixed itself, i just waterproofed it a bit more